Pressure control tubing head



Dec. 3, 1940. Y A. J. PENICK ETAL PRESSURE GONTRQL TUBING HEAD Filed March- 28, 1938 2 Sheets-Sheet l n l5 b l5 I /5 q l4 H l I L 1 I7 /7 l0 /6 i 5 I2 1 V u. l4 l6 1 I Dec. 3, 1940. M, PENICK AL 2.223.,702

PRESSURE CONTROL TUBING HEAD Filed March 28, 19:58 2 Sheets-Sheet 2 v, 4 I v 27 Z a. 25 21 I Z a Z6 6 6 I k I i J l 5 L I l 7 Fig.5.

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Patented Dec. 3, 1940 rnnssunn ooN'moL TUBING HEAD Arthur J. Penick and Kirby T. Peniclr,

Housto Application March 28, 1938, Serial No. 198,485

Claims.

This invention relates to a pressure control tubing head.

An object of the invention is to provide means forcontrolling the flow of fluidunder pressure 6 from a well.

In the production of oil or other fluid from a well, the flow line or lines leading from the well head are usually controlled by a valve or valves.

In case a valve, or fitting, becomes defective or 10 leaks, it becomes necessary to make repairs or substitute a new part for the defective part. In such case, it is necessary or desirable to cut of! the flow oi. fluid through the defective part. It is one of the main objects of the present invention to provide means whereby such flow may be cut as for the purposes stated or for any other desirable purpose.

A further object of the invention to provide this specification and illustrated in the accompanying drawings, wherein- Figure 1 shows a vertical sectional view of a tubing head showing the flow controlling means therein in active position, taken on the line l-l of Figure 3.

Figure 2 shows a vertical sectional view, showing the flow controlling means in open or inactive position, taken on the line 22 of Figure 3.

Figure 3 shows a transverse sectional vie Figure 4 shows a vertical sectional view of another embodiment;

Figure 5 shows a side view, partly in section, taken at right angles to the form shown in Figure 4, and

Figure 6 shows a cross-sectional view taken on thelinei-C oiFigurefi.

Referring now more particularly to the drawlngs, wherein like numerals of reference designate the same parts in each of the figures, the numeral l designates a tubing head shown at! tached to the upper end of an outer pipe 2 in a well. Iihe tubing head has the inside downwardly converging seat 1 on which is seated the tubing hanger Q which forms a fluid tight joint takenon thelineI-loiFigurel.

end of the head there is an adapter on which 5 the Christmas tree or other flow connections may be mounted. The adapter may be secured in seated position by means of the radially movable lock down screws I which have a threaded and sealed connection with the head and whose inner ends are engageable against the upper end of the hanger when the hanger is seated on the seat 3 as shown in Figure l. The lower end of the hanger is reduced in diameter and thus spaced inwardly from the head and leading out from the head beneath the seat 3 are the flow lines 8, t which are'controlled in the usual way by valves, not shown, and of any selected design. The lower end of the hanger is preferably formed with an annular tapering seat 9.

Surrounding and spaced-from the tubing 5, but fitting closely within the head i, there is an annular valve it. countersunk into the upper end of the valve there is an annular seal ring i l, preferably formed oi. rubber or othersuitable sealing material and positioned to fit closely against the seat 9 when the valve Ill is in its upper or active position, as shown in Figure 1. When in its lower position as shownin Figure 2, the seal ring is spaced beneath the seat 9 so as to allow the well fluid to how upwardly between the valve ill and the tubing and to reach the outflow lines 8. The lower end of the valve iii has an annular lip l2 suitably anchored thereto which fits closely against the inside 01' the head I. This lip is held firmly against the inside wall of the head under the influence of the pressure fluid to prevent the escape of said fluid around the valve l8 and when the valve!!! is in closed position, the pressure fluid will be prevented from flowing upwardly through said valve and will thus be cut ofi-irom the outflow lines 8 to the end that the valves or fittings or other connections or said outflow lines may he removed, repaired and replaced.

The valve has the external upwardly flared face it and the external downwardly flared face H.

There are the radial actuating screws it, it having a threaded connectionwith the head i and whose inner ends are tapered and engage the face i3. Upon screwing thesescrews it in" wardly, they will operate against the face it to move the valve id upwardly, or into active or closed position as shown in Figure 1. The screws II are surrounded by suitable stumngboxes it,

to form seals beteween them and the head. When the screws it are reversed or screwed outwardly they will release the face l3 to permit the valve ID to move downwardly or into open position.

In order to cause such downward movement, the radial actuating screws l6, 16 are provided, which have threaded connections with the head and have tapering inner ends to engage the tapering face ll when screwed inwardly as shown in Figure 2, whereby the valve II) will be moved downwardly and the screws I5 moved inwardly to effect the desired purpose. Preferably,.the screws I 5 20 are located opposite each other and at right angles to the screws l6, although their location and number are matters of selection.

In the embodiment shown in Figures 4 to 6, inclusive, the head la, attached to the upper end 2 ,oi the outer pipe, is enlarged, or bowl-shaped, intermediate-its ends providing the enlarged, in-

ternal chamber l8. In this form the head is also provided with the inside seat 3 to support the hanger 4 as shown in Figures 1, and 2. With the o adapter 8, for the Christmas tree bolted on to the head and beneath the seat 3 are the outflow lines, as shown in said Figures 1 and 2.

Beneath the outflow lines 8 there are the oppositely disposed radially movable screws I9, l9, 5 having a threaded connection with the head and surrounded by the stufllng boxes 20. v

' Slidably mounted on the tubing 5, which is suspended from the hanger, there is a discshaped valve composed of the upper and lower 40 annular discs 2|, 22 with an annular sealing disc 23 between them which is formed of rubber or similar resilient material, said discs 2|, 22 and 28 being clamped in a similar relation in any preferred manner as by the clamp bolts 24. 45 This valve is of a diameter to fit closely within the head above the chamber 18. The inner ends of the screws l8, when the latter are screwed inwardly, form abutments to limit the upward movement of the valve, when the valve is in closed position, as shown in Figure 4. The screws I! may be screwed outwardly to clear the valve to permit its insertion or removal. The valve plate 22 has a depending sleeve 25 which fits closely around the tubing 5 and one side of which is formed with a rack face 25:: which is in mesh with a spur gear 28 locked within the chamber l8 and splined on the actuating shaft 21. This shaft is mounted in suitable transversely aligned 6o bearings in the head la and has an'extended polygonal end 211: to receive a wrench whereby it may be turned to shift the valve into closed position as shown in full lines in Figure 4 or to open position as indicated in dotted lines in Figure 4. 65 When in open position the fluid flowing upwardly through the pipe 2 will readily pass by said valve and reach and flow out through the lines 8 8. Should the valves or other connections on said outflow lines require renewal, or replace- 70 ment, the screw llmay be screwed inwardly and the valve moved upwardly by an appropriate rotation of the shaft 2I-into abutting relation with the inner ends of the screws l8 and the valve thus closed and the flow cut oil for making the required repairs. The valve may be locked in 75 said closed position, as-shown lnFigure' 5, by the radially movable locking screws 28, 28 which have a threaded connection with the head'and is surrounded by the stufling boxes 29 and whose outer ends 28a are formed polygonal to receive 'a wrench by means of which they may be turned. When screwed into inner or active position their inner ends will engage underneath the valve to locate it tightly against the inner ends of the screws I9 whereby the valve will be securely held in closed position. It is obvious that the screws 28 may be retracted to permit the actuation of the valve into open position when the repairs have been made and it is desired to permit resumption of the flow.

The drawings and description disclose what is now considered to be preferred forms of the invention, by way of illlustration only, while the broad principle of the invention will be defined by the appended claims.

What we claim is:

1. A tubular head for a well, adapted to beconnected to the top of a well pipe and having an outlet, a pipe hanger supported in the head, a

pipe depending from the hanger, a valve fitted into the head around the pipe, means accessible to an operator for actuating the valve toward the hangerto prevent the flow of well fluid to the outlet and means accessible to the operator for actuating the valve away from the hanger and into open position to permit such flow.

2. A control head for wells having an outflow line leading therefrom, tubing-suspending means in the head, and closing the head above' the outflow line, a tubing suspended from said suspendingmeans, a valve slidable on the tubing, said head and valve'belng shaped so that when the valve is moved to active position it will close the passageway through the head and when moved to inactive position it will open said passageway, means accessible to an operator andoperatively connected with the valve whereby the valve may be actuated into open or closed position, a radially movable abutment on the head arranged to limit the movement of the valve upon movement of the valve to closed position and a radially adjustable locking device on the head engageable with the valve and effective to lock the valve in said closed position.

3. A control head for wells having an outflow line leadingtherefrom, pipe suspending means.

in the head, and closing the head above the outflow line, a pipe suspended from said suspending means and spaced from the head, a valve in the head around the pipe and vertically movable into upper and lower positions being formed to fit closely within the head and close the space between said pipe and the head when in the upper position and being spaced from the head to open the space when in the lower position, and means accessible to an operator adapted to move the valve into either of said positions independentlyof movement of said pipe and head.

.4. In a control head for walls having an outlet therefrom anda tubing hanger in the head adapted to support a tubing in the head; an annular unitary valve in the head positioned around the tubing and movable longitudinally in the head into upper and lower position, said positions of the valve being below the outlet, the valve being eflective to close the head to'flow oi fluid therethrough to the outlet when in the upper position and to allowjflow of fluid therethrough when in lower position, means accessible from without the head to actuate the valve into either r said positions.

s. m a wee ielet therefrom and a tubing hangertlnf itherihead adapted t6 supports. tubln: in' the a'n'am;

mun-unitary valve in the head posltlene'd album! the tubing and movable longitudinally 1n the head into upper and lower podtlon, said positlonl of the valve belnz ,below the outlet, the valve being effective to'elose the head to flow or fluid therethzmzzh to the outlet when in the upper poaltlon and to allow flow or fluid therethrouzh when in lower position, means accessible e ther or saldjposltlone and a radially moveeble abutment on the head arranged'to llmlt move-'- ment of the valve upon movement of the valve td upper position and a radially adjustable locking 5 device on the head engageable wlth the valve and effective te lack the valve in said clesed p0 ARTHUR a. PENICK. my '1'. PENICK.

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